Table 4.
Multivariate logistic analysis of risk factors for ICU-acquired infection in patients with sepsis.
| Covariates | Training cohort | Validation cohort | ||
|---|---|---|---|---|
| Odds ratio (OR) | 95% confidence interval (95% CI) | Odds ratio (OR) | 95% confidence interval (95% CI) | |
| Mechanical ventilation | 2.64 | 2.28–3.07 | 2.69 | 2.15–3.36 |
| Cerebrovascular insufficiency | 2.45 | 2.01–2.98 | 1.77 | 1.30–2.41 |
| Tracheostomy | 2.10 | 1.13–3.90 | 5.84 | 2.48–13.77 |
| Anticoagulant | 1.95 | 1.73–2.19 | 2.08 | 1.73–2.51 |
| SICU | 1.65 | 1.49–1.83 | 1.89 | 1.61–2.22 |
| LODS | 1.57 | 1.44–1.70 | 1.78 | 1.57–2.02 |
| RBC | 1.40 | 1.26–1.57 | 1.31 | 1.11–1.55 |
| Urinary catheter | 1.31 | 1.17–1.47 | 1.28 | 1.06–1.53 |
| Gram-negative bacteria | 1.29 | 1.13–1.48 | 1.16 | 0.94–1.43 |
| Central venous catheter | 1.12 | 1.00–1.27 | 1.22 | 1.02–1.46 |
LODS, Logistic Organ Dysfunction System; SICU, surgical ICU; RBC, transfusion of red blood cells.